import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class CardList{
    private static final String[] SUITS = {"♦","♥","♣","♠"};

    public static List<Card> buyCards(){
        List<Card> list = new ArrayList<>();
        for(int i = 0;i < SUITS.length;i++){
            for(int j = 1;j<=13;j++){
                Card card = new Card(SUITS[i],j);
                list.add(card);
            }
        }
        return list;
    }

    //洗牌
    public static void shuffle(List<Card> list){
        Random random = new Random();
        for(int i = list.size()-1;i>0;i--){
            int index = random.nextInt(i);
            swap(list,i,index);
        }
    }

    private static void swap(List<Card> list,int i,int j){
        Card tmp = list.get(i);
        list.set(i,list.get(j));
        list.set(j,tmp);
    }

    public static void main(String[] args) {
        List<Card> list = buyCards();
        System.out.println(list);

        shuffle(list);
        System.out.println(list);

        List<List<Card>>hand = new ArrayList<>();
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();

        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

        //1.控制次数
        for(int i= 0;i < 5;i++){
            for(int j = 0;j < 3;j++){
                //揭牌的逻辑怎么写？
                Card card = list.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("第1个人的牌："+hand.get(0));
        System.out.println("第2个人的牌："+hand.get(1));
        System.out.println("第3个人的牌："+hand.get(2));

        System.out.println("剩下的牌："+list);

    }
}


